Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.6k papers
- University of California, BerkeleyUS2.5k papers
- The Ohio State UniversityUS2.3k papers
- University of ArizonaUS2.1k papers
- Lawrence Berkeley National LaboratoryUS2.1k papers
- SLAC National Accelerator LaboratoryUS2k papers
- University of California, IrvineUS2k papers
- Yale UniversityUS1.9k papers
- University of Wisconsin–MadisonUS1.9k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.9k papers
- McGill UniversityCA1.9k papers
- University of ChicagoUS1.9k papers
26 papers · 2 filters
The VAST Survey - III. The multiplicity of A-type stars within 75 pc
R. J. De Rosa, J. Patience, P. A. Wilson +11
With a combination of adaptive optics imaging and a multi-epoch common proper motion search, we have conducted a large volume-limited (D 75 pc) multiplicity survey of A-type…
The Compactness of Presupernova Stellar Cores
Tuguldur Sukhbold, Stan Woosley
The success or failure of the neutrino-transport mechanism for producing a supernova in an evolved massive star is known to be sensitive not only to the mass of the iron core that…
Resolved Spectroscopy of the T8.5 and Y0-0.5 Binary WISEPC J121756.91+162640.2AB
S. K. Leggett, Michael C. Liu, Trent J. Dupuy +3
We present 0.9 - 2.5 um resolved spectra for the ultracool binary WISEPC J121756.91+162640.2AB. The system consists of a pair of brown dwarfs that straddles the currently defined T…
The Return of the Proplyds - Understanding the Dynamics of Ionization Triggered Stars
Matthias Gritschneder, Andreas Burkert
Proplyds and stars inside HII-regions are a well studied phenomenon. It is possible that they were triggered by the expansion of the HII-region itself. Here, we present calculation…
Carbon-enhanced Metal-poor Stars in SDSS/SEGUE. I. Carbon Abundance Estimation and Frequency of CEMP Stars
Young Sun Lee, Timothy C. Beers, Thomas Masseron +8
We describe a method for the determination of stellar [C/Fe] abundance ratios using low-resolution (R = 2000) stellar spectra from the SDSS and SEGUE. By means of a star-by-star co…
Hierarchical Bayesian analysis of the velocity power spectrum in supersonic turbulence
Lukas Konstandin, Rahul Shetty, Philipp Girichidis +1
Turbulence is a dominant feature operating in gaseous flows across nearly all scales in astrophysical environments. Accordingly, accurately estimating the statistical properties of…
Comparing the White Dwarf Cooling Sequences in 47 Tuc and NGC 6397
Harvey B. Richer, Ryan Goldsbury, Jeremy Heyl +7
Using deep Hubble Space Telescope imaging, color-magnitude diagrams are constructed for the globular clusters 47 Tuc and NGC 6397. As expected, because of its lower metal abundance…
HST hot Jupiter Transmission Spectral Survey: A detection of Na and strong optical absorption in HAT-P-1b
N. Nikolov, D. K. Sing, F. Pont +16
We present an optical to near-infrared transmission spectrum of the hot Jupiter HAT-P-1b, based on HST observations, covering the spectral regime from 0.29 to 1.027μm with STIS, wh…
The Neutron Star Mass Distribution
Bulent Kiziltan, Athanasios Kottas, Maria De Yoreo +1
In recent years, the number of pulsars with secure mass measurements has increased to a level that allows us to probe the underlying neutron star (NS) mass distribution in detail.…
The Role of Stellar Feedback in the Dynamics of HII Regions
Laura A. Lopez, Mark R. Krumholz, Alberto D. Bolatto +3
Stellar feedback is often cited as the biggest uncertainty in galaxy formation models today. This uncertainty stems from a dearth of observational constraints as well as the great…
The Deflagration Stage of Chandrasekhar Mass Models For Type Ia Supernovae: I. Early Evolution
C. M. Malone, A. Nonaka, S. E. Woosley +4
We present high-resolution, full-star simulations of the post-ignition phase of Type Ia supernovae using the compressible hydrodynamics code Castro. Initial conditions, including t…
A new precise mass for the progenitor of the Type IIP SN 2008bk
J. R. Maund, S. Mattila, E. Ramirez-Ruiz +1
The progenitor of the Type IIP SN 2008bk was discovered in pre-explosion g'r'i'IYJHKs images, acquired with European Southern Observatory Very Large Telescope FORS, HAWK-I and ISAA…
Is there a metallicity ceiling to form carbon stars? - A novel technique reveals a scarcity of C stars in the inner M31 disk
M. L. Boyer, L. Girardi, P. Marigo +10
We use medium-band near-infrared (NIR) Hubble Space Telescope WFC3 photometry with model NIR spectra of Asymptotic Giant Branch (AGB) stars to develop a new tool for efficiently di…
Internal Gravity Waves in Massive Stars: Angular Momentum Transport
T. M. Rogers, D. N. C. Lin, J. N. McElwaine +1
We present numerical simulations of internal gravity waves (IGW) in a star with a convective core and extended radiative envelope. We report on amplitudes, spectra, dissipation and…
Seventy six T dwarfs from the UKIDSS LAS: benchmarks, kinematics and an updated space density
Ben Burningham, C. V. Cardoso, L. Smith +34
We report the discovery of 76 new T dwarfs from the UKIDSS Large Area Survey (LAS). Near-infrared broad and narrow-band photometry and spectroscopy are presented for the new object…
Effects of fermionic dark matter on properties of neutron stars
Qian-Fei Xiang, Wei-Zhou Jiang, Dong-Rui Zhang +1
By assuming that only gravitation exists between dark matter (DM) and normal matter (NM), we study the effects of fermionic DM on the properties of neutron stars using the two-flui…
Dynamics of the solar tachocline III: Numerical solutions of the Gough and McIntyre model
Luis A. Acevedo-Arreguin, Pascale Garaud, Toby S. Wood
We present the first numerical simulations of the solar interior to exhibit a tachocline consistent with the Gough and McIntyre (1998) model. We find nonlinear, axisymmetric, stead…
Photometric variability in a warm, strongly magnetic DQ white dwarf, SDSS J103655.39+652252.2
Kurtis A. Williams, D. E. Winget, M. H. Montgomery +7
We present the discovery of photometric variability in the DQ white dwarf SDSS J103655.39+652252.2 (SDSS J1036+6522). Time-series photometry reveals a coherent monoperiodic modulat…
Refined physical properties and g',r',i',z',J,H,K transmission spectrum of WASP-23b from the ground
N. Nikolov, G. Chen, J. J. Fortney +4
Multi-band observations of planetary transits using the telescope defocus technique may yield high-quality light curves suitable for refining the physical properties of exoplanets…
Energy conservation and gravity waves in sound-proof treatments of stellar interiors: Part II Lagrangian constrained analysis
Geoffrey M. Vasil, Daniel Lecoanet, Benjamin P. Brown +2
The speed of sound greatly exceeds typical flow velocities in many stellar and planetary interiors. To follow the slow evolution of subsonic motions, various sound-proof models att…
Nucleosynthetic Constraints on the Mass of the Heaviest Supernovae
Justin M. Brown, S. E. Woosley
Assuming a Salpeter initial mass function and taking the solar abundances as a representative sample, we explore the sensitivity of nucleosynthesis in massive stars to the truncati…
Very Massive Stars (VMS) in the Local Universe
Jorick S. Vink, Alexander Heger, Mark R. Krumholz +25
Recent studies have claimed the existence of very massive stars (VMS) up to 300 solar masses in the local Universe. As this finding may represent a paradigm shift for the canonical…
The 10830 He I Absorption Line Among Metal-Poor Subdwarfs
Graeme H. Smith, Andrea K. Dupree, Jay Strader
Spectra of the He I 10830 line have been obtained for 23 metal-poor stars, the majority of which are dwarfs ranging in metallicity from [Fe/H] = -2.1 to -0.8. The data were acquire…
Circumstellar absorption in double detonation Type Ia supernovae
Ken J. Shen, James Guillochon, Ryan J. Foley
Upon formation, degenerate He core white dwarfs are surrounded by a radiative H-rich layer primarily supported by ideal gas pressure. In this Letter, we examine the effect of this…